[Synthesis, conformation and pharmacological effect of some stereoisomeric condensed 1,3-oxazine-4-ones. 44: Stereochemical studies; 22: Saturated heterocycles].

It has been reported the synthesis, examination of the stereochemistry and biological effect of 2-substituted-cis-5,6-trimethylen-, cis- and trans-5,6-tetramethylene and -5,6-pentamethylene-2,3,5,6-tetrahydro-1,3-oxazine-4-one derivatives. Primarily cis-isomers were synthetized because in the pharmacological test systems the trans isomers were less active. The compounds tested have an antiphlogistic effect of different intrinsic activity.